<template>
  <div class="login-container">
    <van-nav-bar class="page-nav-bar" title="登录"/>
    <van-form ref="loginForm" @submit="onSubmit">
      <van-field
        name="mobile"
        v-model="user.mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        type="number"
        maxlength="11">
        <i slot="left-icon" class="toutiao toutiao-shouji"></i>
        </van-field>
      <van-field
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        type="number"
        maxlength="6">
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i>
        <template #button>
          <van-count-down
            v-if="isCountDownShow"
            :time="60 * 1000"
            format="ss s"
            @finish="isCountDownShow = false"/>
          <van-button
            v-else
            round
            size="small"
            class="send-sms-btn"
            @click="onSendSms"
            native-type="button">发送验证码</van-button>
        </template>
        </van-field>
      <div class="login-btn-wrap">
        <van-button block class="login-btn" type="info" native-type="submit">登录</van-button>
      </div>
    </van-form>
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'
export default {
  name: '登录',
  data () {
    return {
      user: {
        mobile: '',
        code: ''
      },
      userFormRules: {
        mobile: [{
          required: true,
          message: '手机号不能为空'
        }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式错误'
        }],
        code: [{
          required: true,
          message: '验证码不能为空'
        }, {
          pattern: /^\d{6}$/,
          message: '验证码核实错误'
        }]
      },
      isCountDownShow: false
    }
  },
  methods: {
    async onSubmit (data) {
      const user = this.user
      this.$toast.loading({
        duration: 0,
        forbidClick: true
      })
      try {
        const res = await login(user)
        console.log(res)
        this.$toast.success('登录成功')
        this.$store.commit('setUser', res.data)
      } catch (err) {
        if (err.response.status === 400) {
          this.$toast.fail('手机或者验证码错误')
        } else {
          this.$toast.fail('登录失败,请稍后重试')
        }
      }
    },
    async onSendSms () {
      try {
        await this.$refs.loginForm.validate('mobile')
        console.log('验证通过')
      } catch (err) {
        return console.log('验证失败', err)
      }
      this.isCountDownShow = true
      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        this.isCountDownShow = false
        if (err.response.status === 429) {
          this.$toast('访问太频繁了,请稍后重试')
        } else {
          this.$toast('发送失败,请稍后重试')
        }
      }
    }
  }
}
</script>

<style scoped lang="less">
  .toutiao{
    font-size: 37px;
  }
  .send-sms-btn{
    width: 180px;
    height: 46px;
    line-height: 46px;
    background-color: #EDEDED;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
</style>
